Improvement in paper-bag machines



4 Sheets-Sheet 2. P. W. LElNBACHyfl. A. WOLLE 82 E. H. BRUNNER.

Paper-Bag Machine.

No. 218,036. Patented Jr 29,1879.

' 4 Sheets--She'et 3. F. W. LEINBAGH, O. A. WOLLE & E. H. BRUNNER.

Paper-Bag Ma 0hine.. N 0. 218,036. Patented July29, I879.

N.FETERS PHOTD-UT'rIOGRAPHER. wAsumcToN. D C.

UNITED STATES PATENT OFFICE.

FELIX W. LEINBAOH, CLARENCE A. WOLLE, AND EDWARD H. BRENNER, OF BETHLEHEM, PENNSYLVANIA, ASSIGNOBS TO SAI D VVOLLE AND BRUNNER; SAID BRUNNER ASSIGNOR TO SAID WOLLE.

IMPROVEM ENT lNPAPER -BAG MACHINES.

Specification forming part of Letters Patent No. 218,036, dated July 29, 1879 application filed January 15, 1879.

To all whom it may concern:

Be it known that we, FELIX W. LEINBACH, CLARENCE A. WoLLE,and EDWARD H. BRUN- NER, all of Bethlehem, Northampton county, Pennsylvania, have invented a new and useful Improvement in Machines for Making Satchel-Bottomed Paper Bags, of which the following is aspecification.

Our invention relates to certain improvements in the manufacture of satchel-bottomed bags, and in machinery for making such bags rapidly and by a continuous operation.

In the accompanying drawings, Figures 1 to 4, Sheet 1, are diagrams illustrating the mode of making the primary fold in the bot tom of the bag. Figs. 5 to 11, Sheet 2, are diagrams illustrating detached portions of the machine' and its consecutive operations; Fig. 12, Sheet 3, a vertical section of the machine;

. Fig. 13, a plan view of the same; Figs. 14 to 22, Sheet 4, detached views of parts of the machine; Fig. 23, Sheet 2, a view of the bag as delivered from the machine, and Fig. 24 a view of the finished bag when distended.

Figs. 23 and 24 are drawn toa smaller scale than the other figures.

A preliminary understanding of the main feature of our invention can be best attained by referring to the diagrams in Sheet, 1 of the drawings.

In Fig. 1, .70 represents a tube of paper the edges of which have not been flattened, but preserve the rounded shape originally imparted to them by the tube-forming devices. If the fingers of the left hand be pressed upon this tube, as shown in Fig. 2, the central portion of the tube will be depressed, without, however, flattening the edges, so that if the right hand is then laid across the tube transversely at some distance in the rear of the mouth of the tube, as shown inFig. 3, the said mouth will be caused to gape open, so as to permit the free entrance of the forefinger of the left hand, by which the upper edge of the mouth may be drawn back, as shown in Fig. 4, the edges of the tube being caused to turn in to- 'ward each other by this operation, so as to complete the primary fold of the bottom.

We will now proceed to describe the mode to other paper-bag machines.

for after consideration the mechanism for act-Y uating these appliances and combining them in an automatic machine.

The tube .10 of paper, Fig. 5, is made in the usual manner by bending a sheet of paper over a former, a, and pasting together the overlapping edges of the sheet in a manner common The seam, however, is on the'bottom instead of on the top of the tube, for a purpose which will be explained hereinafter. As the tubepasses over the former it receives an impression from the typecylinder 1), and, after being thus printed, the

upper portion of the tube passes between an elastic roller, d, carried by the former a, and

a roll,-d, carrying a segmental knife, e, the latter cutting a piece from the tube, so as to leave therein an opening, a, which, in every completed bag, is at the upperedge of the same, and serves as a thumb-notcltto facilitate the distension of the mouth of the bag. The tube passes from the former a between a pair of rollers, ff, furnished with knives g g, Fig. 6, which sever the tube transversely, each of the short tubes thus formed being of the proper length for conversion into a bag. The edge of the knife g is inclined, so that said knives act on the paper with a shearing effect.

The knife of the upper roll has a slot in the center, so as to leave a narrow 1160k,i,b8 tween the adjacent short tubes or bag-blanks, the necks thus formed serving to connect the blanks to each other and facilitate the even feeding of the same through the machine.

After leaving the rolls f f the'blanks pass between a table, A, and a plate, B, the latter having a combined vertical and longitudinal reciprocating movement imparted to it by means of the devices hereinafter described.

It will be observed that the rolls ff are reduced in diameter at and near each end, so that only the central portion of the tube is clamped between the rollers, the edges of the lube not being flattened,'but preserving the rounded shape imparted to them by the former a. In consequence of this the descent of the plate 13 onto the tubular blank, as shown to resist the strain.

in Fig. 7, causes the severed edge of the blank to gape open,-so as to permit the entrance of a rod, D, which, movingin the direction of the arrow, while the blank and the plate B move in the opposite direction, causes the severed end of the blank to be folded over the plate in the manner shown in Fig. 8.

The seam, being formed on the bottom of the tube, is 7 not subjected to strain during the above-described operation of folding the end of the blank, the distending-rod D acting on the upper portion of the tube, which is able By this means the tearing apart of the freshly-pasted seam is prevented.

After the end of the blank has been folded, as above described, the blank passes between a pairof rollers, E E, by which the folded end is flattened, the blank being then fedalong between the table A and a pairof belts, F,

- which pass round the upper roll, E, round a drum, G, and round the'reduced ends of a roller, I, the body of which is in contact with d the surface of the drum.

The-upper roll, E, is grooved in the center for the reception of the distending-rod D.

As the blank passes round thedrumGr paste is applied to the folded portion of the same, as shown in Fig. 9, by means of apair of rollers, m, carried by an arm, n, on a rock-shaft, n, the rollers, after applying the paste, being retracted, so as. to be out of the way.

"The passage of the folded portion of the blank round the convex face of the drum G causes the flaps w w to be tilted up, as shown in Fig. 9, so that the upper flap x is brought into the path of a plate, J, which is tangential to the periphery of thedrum G, and is carried by a pair of vibrating arms, J, hung to the shaft of the drum G, and the lower flap is brought into position to be turned up by the roller I as the'folded portion of the blank passes between the same and the drum G.

(See Fig. 10.)

The plate J might be arranged parallel with instead of tangential to the surface of the drum G, although the tangential arrangement is preferred. 7

The size of the flaps :v a." is determined by the distance apart from each other of the belts F, the latter confining the blanks at the edges and serving as guides to determine the line on which the flaps w w are folded, as fully shown in Figs. 9, 10, and 11.

If desired, the roll E may have projecting strips for creasing the blanks on the transverse dotted lines shown in Fig.9; but in most cases this will not be necessary.

After passing between the drum G and roller I the blanks are released, and fall'into a suit'-. I

the pressing rolls E E, the drum G, and the rock-shaft n.

The various rolls are geared together so that their surfaces travel at the proper speed for effecting the feeding of the tube of paper through the machine evenly and smoothly.

The devices for effecting the operation of the plate B areshown in Fig. 13, Sheet 3, and Figs. 14 and 15, Sheet 4. at each end to a bar, 8, and one end of this bar 8 is'hun'g to the end of a guided bar, t, the latter having a rack, upon which acts at intervals a segmental pinion, -t, on the shaft of the lower roll,f.

The bars 8 are connected together beneath the table A by a transverse rod, u, upon which acts a spring, u, the tendency of the latter being to draw the plate B toward the rolls ff. The bars s are acted upon by cams s on the ends of the lower roll, f, these cams imparting a vertical vibrating movement to the bars 8 and plate B. The longitudinal movement of the bars and plate in one direction is imparted by the segmental pinion t and rack-bar t, and as soon as said rack-bar is released from the control of the pinion the spring u efl'ects the return of the bars 8 t and plate B to their originalpositions.

The devices for operating the distendiugrod D are shown in the perspective diagram,

7 Fig. 16. r r

' The rod D is adapted to a groove in the roll E, and is connected to the end of a bent arm,

v, on a rock-shaft, 12*, another arm on which shaft is connected by means of a rod, 11 to a crank-pin on a wheel, '12, carried by the spindle of the roll E.

As the crank-wheel revolves the rock-shaft is vibrated, and a reciprocating movement imparted to the rod 1').

Fig. 17 represents the pasting device.

In a box,P, adjacent to the drum G, is arranged a roller,-R, round a pulley, p, on the spindleof which passes a belt, 11, the latter also passing round one of two pulleys, g, which turn loosely on the rock-shaft M, and support the belts F E.

The rock-shaft m. has an arm, a, to which is connected one end of a guided bar, j, the opposite end of which is acted upon by a cam, k, on the journal of the roll E.

As the bar j is reciprocated by the cam 21.

- rockin g motion is imparted to the shaft n, and

the rollers m, carried by .the arm n of said The plate is secured shaft, are caused to vibi ate between thedrnm G and the rollerR inthe paste-trough.

Figs. 18 to 22, inclusive, represent the devices for operating the plate J and the various movements of the latter. The ends of the plate J have narrow projections, which are adapted to inclined slots wnear the upper edges of plates K, hung to'the spindle or shaft of the drum G. The ends of the projections ,7 on the plate J terminate in pins adapted to slots r in the upper ends of the pivoted bars J, which, as before stated, are also hung to the shaft G.

One'of the bars J is connectedby means of a rod, h, to the end of an arm, h on a rockshaft, W, the latter being'adaptedto hearings in the frames of the machine, and having, in

addition to the arm it, two other arms, Land 1', the former of which is acted upon by .a spring, 1 the arm I being acted upon by the bent end of an arm, 1 on the spindle of. the roller E. v I

The action of the arm I on the arm l causes a rocking of the shaft h so as to move the bars J in one direction, and as soon as the arm 1 is free from the control of the arm 6 the action of the spring 1 causes the retraction'of the bars. to their original positions, determined by the contact of 'a bent arm, y, witha pin, 3 on one of the plates K. When the parts are'iu this positioi'nas shown in Fig. 19,

the plated .i.s.,-ele\.*ated some distance above the'surface of the drum Gr; but the first eflect of the forward movement of the arms J is'to cause the downward and forward movement of the plate J, owing to the inclined slots 10' in the plates K. (See Fig. 20.) After reaching the position shown in Fig. 20, further" movement of the arms J causes the plates J to be rotated partially around the surface of the drum to the position shown in Fig. 21, the

' plates K being carriedarou-n'd by the arms J during this movement. After reaching the position shown in Fig. 21, the direction of the movement of the arms J is changed, the first efl'ect of this change, owing to the inclined slotsw in the plates K, beingfto move the plate J away from the surface of the drum, as shown in Fig. 22, a continuance of the movenent restoring the parts t6 their original positions, as shown in Fig. 1-9.

The above-described machine is continuous in its movement, and can be run at a very high rate of speed without risk of impairing the quality of the work. The presser-bar B and distending-rod- D, moreover, act with a like degree of efficiency on all classes of paper,

so that the machine may be used for the pro- Witnesses:-

duction of various grades of work, from small bags of thin paper to the largest-sized tloursacks, which are made of paper comparatively strong and heavy.

We claim as our invention-- 1. As an improvement in the manufacture of satchel-bottomed bags, the mode herein described of formingthe primary fold in the bottom of the bag-that is to say, .by indenting transversely a tube "the edges of which have not been flattenedsand then distending longitudinally the month of the tube, which has been partly opened by said transverse pressure, all substantially as set forth.

2. The combination of the transverse presser B, the former a, and center drawing-rolls ff, arranged between the presser and the former, as set forth.

3. The combination of the transverse presser B with the longitudinally -reciprocating distending-bar D, all'snbstantially as specified.

4. The combination of the formera with the roller d, having a knife, e, cons t'rncted as described,'so as to cut a piece from the tube, leaving a thnmb-notchtherein, as specified.

The combination of the presser-plate B, thebars s, the rack-bars t, the camss, the segmental pinions' t, and the spring a, as specified. i

6. The combination of the distending-rod D withrthe crank-wheelo and devices, su stantially as described whereby the motion of the crank-pinis transmitted to the rod, all as set forth. v

7. The combination of the drum G with the plate J, and with devices, substantially as described, whereby the said plate is caused to approach the surface of the drum at the commencement of its movement of rotation, and to recede from said surface after reaching the limit of its. rotary movement, the plate, however, always preserving its position parallel with or tangential to the periphery of the drum, as set forth.- 8. The combination of the drum G, the plate J, the pivoted plates K, having inclined slots to, and the vibrating. arms J, having slots 1',

.all as described.

. FELIX W, LEINBAOH.

CLARENCE A.-WOLLE. EDWARD H. BRUNNER.

TrNsLEv Jn'rnn, JOHN G..WEBER. 

